__init__.py

    #bpy.types.TEXTURE_PT_context_texture.prepend(TEXTURE_PT_povray_type)
    bpy.types.Scene.pov = PointerProperty(type=RenderPovSettingsScene)
    bpy.types.Material.pov = PointerProperty(type=RenderPovSettingsMaterial)
    bpy.types.Texture.pov = PointerProperty(type=RenderPovSettingsTexture)
    bpy.types.Object.pov = PointerProperty(type=RenderPovSettingsObject)
    bpy.types.Camera.pov = PointerProperty(type=RenderPovSettingsCamera)
    bpy.types.Text.pov = PointerProperty(type=RenderPovSettingsText)


def unregister():
    bpy.utils.unregister_module(__name__)
    #bpy.types.TEXTURE_PT_context_texture.remove(TEXTURE_PT_povray_type)
    del bpy.types.Scene.pov
    del bpy.types.Material.pov
    del bpy.types.Texture.pov
    del bpy.types.Object.pov
    del bpy.types.Camera.pov
    del bpy.types.Text.pov


if __name__ == "__main__":
    register()